Johnson Controls TEC22 4-3 Series, TEC2264-3, TEC2204-3 Installation Instructions Manual

TEC22x4-3 LONWORKS® Networked
Multi-Stage Economizer Thermostats

Installation Instructions

Part No. 24-9890-501, Rev. —

Issued September 8, 2006

Applications

The TEC2204-3 non-programmable and
TEC2264-3 programmable thermostats are
L

ONWORKS® networked devices that provide control of

single- or multi-stage unitary rooftop units with
economizers. The technologically advanced
TEC22x4-3 thermostats feature a Building Automation
System (BAS) L

ONWORKS network communication

capability that enables remote monitoring and
programmability for efficient space temperature control.

IMPORTANT: The TEC22x4-3 thermostats are
intended to provide an input to equipment under
normal operating conditions. Where failure or
malfunction of the thermostat could lead to personal
injury or property damage to the controlled
equipment or other property, additional precautions
must be designed into the control system.
Incorporate and maintain other devices such as
supervisory or alarm systems or safety or limit
controls intended to warn of, or protect against,
failure or malfunction of the thermostat.

North American Emissions Compliance

United States

This equipment has been tested and found to comply
with the limits for a Class A digital device pursuant to
Part 15 of the FCC Rules. These limits are designed to
provide reasonable protection against harmful
interference when this equipment is operated in a
commercial environment. This equipment generates,
uses, and can radiate radio frequency energy and, if
not installed and used in accordance with the
instruction manual, may cause harmful interference to
radio communications. Operation of this equipm ent in a
residential area is likely to cause harmful interference,
in which case the user will be required to correct the
interference at his/her own expense.

Cet appareil numérique de la Classe (A) respecte
toutes les exigences du Règlement sur le matériel
brouilleur du Canada.

Installation

Location Considerations

Locate the TEC22x4-3 thermostat:

• on a partitioning wall, approximately 5 ft ( 1. 5 m)
above the floor in a location of average
temperature

• away from direct sunlight, radiant heat, outside
walls, behind doors, air discharge grills, stairwells,
or outside doors

• away from steam or water pipes, warm air stacks,
unconditioned areas (not heated or cooled), or
sources of electrical interference

Note: Allow for vertical air circulation to the
TEC22x4-3 thermostat.

To install the thermostat:

1. Use a Phillips-head screwdriver to remove the
security screw on the bottom of the thermostat
cover.

2. Pull the bottom edge of the thermostat cover and
open the thermostat as illustrated in Figure 1.

Canada

This Class (A) digital apparatus meets all the
requirements of the Canadian Interference-Causing
Equipment Regulations.

TEC22x4-3 LONWORKS® Networked Multi-Stage Economizer Thermostats

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Figure 1: Removing the Thermostat Cover

Installation Instructions

1

3. Carefully pull the locking tabs on the right side of
the thermostat mounting base and unlock the
Printed Circuit Board (PCB). Open the PCB to the
left as illustrated in Figure 2.

PCB
Locking
Tabs

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Figure 2: Opening the Thermosta t PCB

4. Pull approximately 6 in. (152 mm) of wire from the
wall and insert the wire through the hole in the
thermostat mounting base.

5. Align the thermostat mounting base on the wall and
use the base as a template to mark the two
mounting hole locations.

Note: Be sure to position the thermostat mounting
base so that the arrow on the base points upward to
indicate the top of the thermostat.

6. Drill a 3/16 in. (5 mm) hole at each of the two
marked locations and tap nylon anchors (include d
with the thermostat) flush to the wall surface.

7. Position the thermostat mounting base on the wall
and use the two mounting screws (included with
the thermostat) to secure the base to the surface
as illustrated in Figure 3.

Note: Be careful not to overtighten the mounting
screws.

8. Swing the PCB back to the right and carefully snap
it into the locking tabs on the thermostat mounting
base.

9. Pull the pull tabs on each of the connectors and
remove the screw terminal blocks as illustrated in
Figure 4.

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Figure 4: Removing the Screw Terminal Blocks

Wiring

When an existing thermostat is replaced, remove and
label the wires to identify the terminal functions. When
a TEC22x4-3 thermostat is replaced, sim ply re m ov e
the old screw terminal blocks and reinsert them onto
the PCB of the replacement thermostat.

CAUTION: Risk of Electric Shock.

Disconnect the power supply before

!
!

making electrical connections to avoid
electric shock.

CAUTION: Risk of Property Damage.

Do not apply power to the system before
checking all wiring connections. Short
circuited or improperly connected wires
may result in permanent damage to the
equipment.

Figure 3: Securing the Thermostat

Mounting Base to the Wall

TEC22x4-3 LONWORKS® Networked Multi-Stage Economizer Thermostats Installation Instructions2

IMPORTANT: Make all wiring connections in
accordance with local, national, and regional
regulations. Do not exceed the electrical ratings of
the TEC22x4-3 thermostat.

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To wire the thermostat:

1. Strip the ends of each wire 1/4 in. (6 mm) and
connect them to the appropriate screw terminals as
indicated in Figure 5.

Note: For more details on wiring the
L

ONWORKS network, refer to the

L

ONWORKS Network Layout Technical Bulletin

(LIT-1162150).

2. Carefully push any excess wire back into the wall.
Seal the hole in the wall with fireproof material to
prevent drafts from affecting the ambient
temperature readings.

3. Reinsert the screw terminal blocks onto the PCB.

4. Reattach the L

ONWORKS communication wires to

the LON terminal block. See Figure 5.

Note: If inserting multiple wires into the terminals, be
sure to properly twist wires together prior to inserting
them in the terminal connectors.

5. Reattach the thermostat cover to the mounting
base (top side first).

6. Use a Phillips-head screwdriver to reinstall the
security screw on the bottom of the thermostat

cover.

Three-Pole
Right Top Connector

RH W1 W2

6

78

ON ORKS

LW

Bus Te rminals

Five-Pole
Left Top Connector

Y2

1

GRCC

Y1

23

45

Eight-Pole Bottom Connector

Table 1: Terminal Identification (See Figure 5.)

Number Label Function

1Y2Energizes on a call for second-stage

2Y1Energizes on a call for first-stage

3GEnergizes fan in accordance with

4RC24 VAC from equipment transformer
5C24 VAC (Common) from equipment

6RH24 VAC for heating stage
7W1Energizes on a call for first-stage

8W2Energizes on a call for second-stage

9EC0 to 10 VDC Economizer Actuator

10 Aux Auxiliary output
11 DI1 Configurable Digital Input 1
12 DI2 Configurable Digital Input 2
13 RS Remote Room Temperature Sensor
14 Scom Sensor Common

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15 OS Auxiliary/Outdoor Air Sensor
16 MS Mixed Air Temperature Sensor
Blank Blank L

cooling.

cooling.

selected fan mode.

transformer

heating.

heating.

Output

ONWORKS Bus

Y2 Y1

Cool 2

Cool 1

24 VAC

Thermostat Power

DI1 DI2 RS

Aux

EC

9

10 11 12 13 14 15 16

Scom

Figure 5: Terminal Blocks

G

RCECC

RH W1

Fan

If using the same power source
for the thermostat an d heating loads,
install a j um per across RC and RH.

Figure 6: Wiring the TEC22x4-3 Thermostats

Heat 1

MSOS

W2

Heat 2

Isolated Contact

• Lighting

• On/Of f Actuation

• Exhaus t Fan

Scom

Aux

0

C

1

D

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V

Aux

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2

C

RS MS

DI2DI1

Remote

Room

Sensor

OS

Auxiliary/

Outdoor

Air Sensor

Monitoring

Temperature

Remote

Supply
Sensor

LW

ON ORKS

Bus Terminal

Supervisory

Controller

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TEC22x4-3 LONWORKS® Networked Multi-Stage Economizer Thermostats Installation Instructions 3

Connecting the LONWORKS Network

Y

The wiring rules for the LONWORKS network differ from
the wiring rules for the Metasys® N2 Bus and the
BACnet® Master-Slave/Token Passing (MS/TP) Bus.
For more details on wiring the L
refer to the L

ONWORKS Network Layout Technical

ONWORKS network,

Bulletin (LIT-1162150).
To connect the thermostat to the L

1. Connect the L
L

ONWORKS network terminal block on the

ONWORKS network wires to the

ONWORKS network:

thermostat (Figure 5, Figure 6, and Figure 7).

LW

ON ORKS

Bus Te rminals

Supervisory

Controller

The L

ONWORKS network requires proper termination

and biasing at the end of a segment (a segment is a
physically continuous length of wire). The thermostat is
not equipped with the ability to provide this termination;
therefore, it cannot be located at the physical end of a
L

ONWORKS network segment unless a terminator is

attached. Refer to L

ONWORKS Network Layout

Technical Bulletin (LIT-1162150) for end-of-line

solutions.

Setup and Adjustments

Thermostat Operation Overview

LW

ON ORKS

Network Wires

LW

ON ORKS

Terminal B lock

Network

Twist wires together
before inserting them into
the terminals.

Figure 7: Thermostat to Network Connection

Note: There is no polarity when connecting the

L

ONWORKS network wires to the thermostat; however,

we recommend keeping the polarity consistent
throughout the network.

2. After the L

ONWORKS network wires are connected

to the first thermostat, continue in a daisy-chained
fashion to the next device.

Note: The L

ONWORKS network wiring must be twisted-

pair lines.
Do not run the L

ONWORKS network wiring in the same

conduit as line voltage wiring (30 VAC or above) or
other wiring that switches power to highly inductive
loads (such as contactors, coils, motors, or
generators).

Backlit, pl ain text

LCD is easy to read

in any condi t io n.

LEDs indicate
system activity.

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Five keys on the thermos t at
make operation easy and intuitive.

Figure 8: Front Cover of Thermostat

Room Temp

70.0ºF

ES NO

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Thermostat User Interface Keys

The TEC22x4-3 thermostat user interface consists of
five keys on the front cover (as illustrated in Figure 8).
The function of each key is as follows:

•Use the YES/SCROLL key to:

- confirm menu selections and to advance to the
next menu item

- stop the Status Display Menu from scrolling
and to manually scroll to the next parameter on
the menu

Note: When the thermostat is left unattended for
45 seconds, the thermostat display resumes scrolling.

•Use the NO key to decline a parameter change and
to advance to the next menu item.

TEC22x4-3 LONWORKS® Networked Multi-Stage Economizer Thermostats Installation Instructions4

•Use the MENU key to:

- access the Main User Menu or to exit the menu
(See the Main User Menu section.)

- access the Installer Configuration Menu or to
exit the menu (See the Configuring the
TEC22x4-3 Thermostat section.)

•Use the UP/DOWN arrow keys to change the
configuration parameters and to activate a setpoint
adjustment.

Backlit Liquid Crystal Display (LCD)

The TEC22x4-3 thermostat includes a 2-line,
8-character backlit display. Low-level backlighting is
present during normal operation, and it brighten s when
any user interface key is pressed. The backlight returns
to low level when the thermostat is left unattended for
45 seconds.

Light-Emitting Diodes (LEDs)

Three LEDs are included to indicate the fan status, call
for heat, or call for cooling:

•The FAN LED is on when the fan is on.

•The HEAT LED is on when heating is on.

•The COOL LED is on when cooling is on.

Programming Overview

There are three menus used to view, program, and
configure the TEC22x4-3 thermostats.

The Status Display Menu is displayed during normal
thermostat operation. This menu continuously scrolls
through the following parameters:

• Room Temperature

• Clock (TEC2264-3 only)

• System Mode

• Occupancy Status – Occupied/Unoccupied/
Override

• Outdoor Temperature – An outdoor air te mperature
sensor must be connected.

• Applicable Alarms – The backlight lights up as an
alarm condition is displayed.

Note: Press the YES/SCROLL key to temporarily stop
this menu from scrolling.

The Main User Menu is used to access and change
the basic operating parameters of the thermostat.
Access this menu by pressing the MENU key during
normal thermostat operation.

The Installer Configuration Menu is used to set up
the thermostat for application-specific operation. To
access this menu, press and hold the MENU key for
approximately 8 seconds.

Configuring the TEC22x4-3 Thermostats

The TEC22x4-3 thermostats come from the factory
with default settings for all configurable parameters.
The default settings are shown in Table 2. To
reconfigure the parameters via the thermostat, follow
the steps in this section.

1. To access the Installer Configuration Menu, press
and hold the MENU key for approximately
8 seconds.

2. Once the Installer Configuration Menu begins,
press the NO key to scroll through the parameters
listed in Table 2.

3. When the desired parameter is displayed, use the
YES key to choose the desired selection option.

4. Press the YES key and then the NO key to
continue scrolling through the parameters.

To exit the Installer Configuration Menu any time, press
the MENU key, and at the exit prompt, press the YES
key. To pass over a parameter without changing it,
press the NO key.

When the thermostat is in the Installer Configuration
Menu and left unattended for approximately 8 seconds,
the thermostat reverts to the Status Display Menu.

For additional information on commissioning and
configuring thermostats, adding thermostats to a
Network Automation Engine (NAE), thermostat
mapping, and remote themostat commanding, refer to

TEC226x-3 and TEC220x-3 Series L
Network Configurable Staged Thermostats Technical
Bulletin (LIT-12011196).

ONWORKS®

Configuring the Thermostat’s Neuron® Identification

Press and hold the UP/DOWN arrow keys
simultaneously for five seconds to broadcast the
thermostat’s Neuron Identification on the L
network.

If the cover is removed, you can see a green LED
under the LON board flash when the thermostat
broadcasts the Neuron ID. The Neuron ID is on a label
on the Echelon® chip.

You cannot send the Neuron ID while in the Installer
Configuration menu.

ONWORKS

TEC22x4-3 LONWORKS® Networked Multi-Stage Economizer Thermostats Installation Instructions 5

Configuring Inputs DI1 and DI2

When DI1 and DI2 are configured for an alarm
condition, an alarm condition is displayed locally when
the input is closed. An alarm message is included on
the scrolling Status Display Menu and when the
message is displayed, the backlight momentarily
lights up.

Table 2: Installer Configuration Menu (Part 1 of 5)

Parameter
Appearing
on Display

1

DI1

1

DI2

Lockout Selectable Lockout Levels for

Description and Default Selection Options

Configuration of Digital Input 1.
Default: None

Configuration of Digital Input 2.
Default: None

limiting end-user keypad interaction.
Default: 0

(None): No function is associated with an input.
(Service): A Service alarm is displayed on the thermostat when the

input is energized. This input can be tied into the air conditioning unit
control card, which provides an alarm should there be a malfunction.

(Filter): A Filter alarm is displayed. This alarm can be connected to
a differential pressure switch that monitors a filter.

(RemOVR): Temporary occupancy request via a remote input. This
override function is controlled by a manual remote occupancy
override. When enabled, this condition disables the override
capability of the thermostat.

(RemNSB): Remote Night Setback (NSB) via a time clock input, an
occupancy sensor, or from a voltage-free contact.
Contact open = Occupied; contact closed = Unoccupied.

(None): No function is associated with an input.
(Service): A Service alarm is displayed on the thermostat when the

input is energized. This input can be tied into the air conditioning unit
control card, which provides an alarm should there be a malfunction.

(Filter): A Filter alarm is displayed. This alarm can be connected to
a differential pressure switch that monitors a filter.

(RemOVR): Temporary occupancy request via a remote input. This
override function is controlled by a manual remote occupancy
override. When enabled, this condition disables the override
capability of the thermostat.

(RemNSB): Remote Night Setback (NSB) via a time clock input, an
occupancy sensor, or from a voltage-free contact.
Contact open = Occupied; contact closed = Unoccupied.

Function Lockout Level

Occupancy
Override

Permanent
T emperature
Setpoints

T emporary
T emperature
Setpoints

System Mode
Setting

Fan Mode
Setting

Schedules
Setting

Clock Setting

Both inputs can be configured to the Selection Options
included in Table 2.

(0) (1) (2)

Access Access No Access

Access No Access No Access

Access Access No Access

Access No Access No Access

Access No Access No Access

4

Access No Access No Access

4

Access Access Access

TEC22x4-3 LONWORKS® Networked Multi-Stage Economizer Thermostats Installation Instructions6